Technique for secondary aluminum silicon alloys crassitude grain refinement

Abstract

The invention relates to a technique for refining coarse crystal grain of recycled al alloy, which is achieved like that the technique comprises the following steps: firstly, melting regeneration aluminum-silicon alloy, secondly, preparing a stirrer and a copple, thirdly, stirring semi solid of regeneration aluminum-silicon alloy, fourthly, squeezing slurry of the semi-solid regeneration aluminum-silicon alloy. The technique has the advantages that the technique adopts a built-up gear stirrer to stir, which can completely and evenly stir semi-solid aluminum-silicon alloy liquid with high speed, leads coarse fir-tree crystal to be broken and be refined to be normal tissue, and the squeezing of semi-solid slurry of regeneration aluminum-silicon alloy leads regeneration aluminum-silicon alloy crystal grain to be further refined under high pressure.

Description

technical field [0001] The invention relates to a process for refining coarse grains of recycled aluminum-silicon alloys. Background technique [0002] As aluminum-silicon alloys are more and more widely used in various fields, there are more and more aluminum-silicon alloy waste products. Recycling these aluminum-silicon alloys and turning waste into treasure not only saves energy, but also is conducive to environmental protection. However, because high-silicon-aluminum-silicon alloys often have coarse grains and low mechanical strength, they cannot be used normally. People have used common methods such as chilling, extrusion, and deterioration to solve the problem, but when the material is remelted, the genetic phenomenon of coarse grains often occurs, so people need to refine the coarse grains of the recycled aluminum-silicon alloy. [0003] The object of the present invention is to provide a process for refining the coarse grains of recycled aluminum-silicon alloy, whic...

AI Technical Summary

Problems solved by technology

However, because high-silicon aluminum-silicon alloys often have coarse grains and low mechanical strength, they cannot be used normally.

People have used common methods such as chilling, extrusion, and deterioration to solve the problem, but when the material is remelted, the genetic phenomenon of coarse grains often occurs, so people need to refine the coarse grains of recycled aluminum-silicon alloys.